Is there a pin-compatible replacement for 2920L050DR?

Several candidates like SMD2920-050C-60V and SMD2920P050TF share the same 2920 package and key electrical ratings, making them likely pin-compatible. However, full verification of the datasheet is required before use.

What risks should I check before replacing 2920L050DR?

Key risks include differences in resistance (both initial and post-trip), which affect power loss, and variations in time-to-trip characteristics. Always compare full datasheets to ensure the replacement meets your specific protection timing requirements.

2920L050DR Alternatives, Datasheet & Cross Reference | Littelfuse

The Littelfuse 2920L050DR is a 60V, 0.5A hold current PTC resettable fuse in a standard 2920 surface-mount package, designed for reliable overcurrent protection in a wide range of electronic applications.

AI replacement insight

Package risklow

All viable candidates use the same 2920 surface-mount package.

Electrical riskmedium

While core ratings match, parameters like resistance and trip time must be verified from datasheets to ensure proper circuit protection.

Can it be replaced directly?

Yes, several functional alternatives exist for 2920L050DR. Candidates like SMD2920-050C-60V share the same package and key electrical ratings, making them strong contenders for replacement after datasheet review.

Best replacement path

SMD2920-050C-60V from BNstar appears to be the strongest candidate due to complete data and favorable specs. SMD2920P050TF is also a very close match pending data verification.

Main risk

The primary risk is a mismatch in resistance or time-to-trip characteristics, which can affect circuit protection timing and normal-state power loss.

Recommended alternatives

A strong alternate with matching core ratings and potentially improved resistance and fault current handling.

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Alternative comparison matrix

Feature / factor	2920L050DR	SMD2920-050C-60V	SMD2920P050TF	SMD050L	Compatibility / risk
Package	2920	2920	2920	2920	2920 — Same package family.; SMD2920P050TF: Same package family.; SMD050L: Same package family.
Current	10A	40A	1.0A	100A	40A / 1.0A / 100A — Max fault current is higher, which is a safe upgrade.; SMD2920P050TF: Trip current matches.; SMD050L: Max fault current is 10x higher, a significant upgrade.
Resistance	0.350Ω (min)	0.180Ω (min)	Not specified in provided data.	Not specified in provided data.	0.180Ω (min) / Not specified in provided data. — Lower initial resistance reduces power loss.; SMD2920P050TF: Resistance is a key parameter for PTCs.; SMD050L: Resistance data is missing.
Voltage	60V	-	60V	-	60V — Max voltage matches.

Application & sourcing insights

Questions & answers

SMD2920-050C-60V by BNstar is a strong candidate with matching key ratings and potentially improved resistance. SMD2920P050TF by RUILON is also a very close match, but requires verification of its resistance characteristics.